How do I fix cursor jumping while typing on MacBook Pro?

chuckenglish wrote:

I’m working on a MacBook Pro and when I’m typing I find that the cursor seems to jump to another place in the document or email. I’m working on. I don’t know what I’m doing to cause that and if anyone else has experienced the same problem and what can be done

[Re-Titled by Moderator]

Original Title: Cursor jumps

you do not say what exact vintage of Mac this is....

A swollen battery impacting the trackpad is one cause. Check externally for any sign of seam sepeation or your mac not sitting flat on the table...(?)

ex.

if it is a software issue—

To trouble shoot further you can:

—A SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

Does a quick disk repair before it fully boots up, and certain system caches get cleared and rebuilt, third party system modifications and system accelerations are disabled temporarily.

Login and test. Reboot as normal and test. Caches get rebuilt automatically.

This test will tell you if third party interference; most extensions etc are not loaded in safe boot mode.

*** (if you are using a wireless keyboard with rechargeable batteries— connect the charging cable, this will make the wired keyboard successful Safe Boot your Mac.)

—Test issue in another user (or guest user) account Change Users & Groups settings on Mac - Apple Support

This will tell you if it a universal issue or isolated to your user/admin account. 

unplug all non-essential peripherals when testing

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS